The Ethics Problem Mystery (Kids on the Case, 6)

Best friends Mary Ann Page and Kolleen Kelly are nervous and excited as their sixth-grade year slowly draws to a close. ... Mary Ann and Kolleen are looking forward to a visit from Mr. Dodge, the junior high principal, during which all their questions will be answered. But Mr. Dodge's visit to Pine Bend Elementary School is abruptly postponed after the junior high is attacked by vandals. All of Pine Bend is shocked and dismayed by the extensive damage and graffiti left behind. Mary Ann and Kolleen decide to do what they can to track down the wrongdoers